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traction and melt the snow. “That’s about the maximum. By then, too much of the snow has turned to water and it dilutes the chemicals.” He notes that crews assigned to chemical spreading details keep close tabs on the thermometer. “When the temperature gets to about 20 degrees, sand and sodium chloride stop working.” For colder spots in the county and when the mercury dips to the high teens, expensive calcium chloride is substituted for salt, but even that mixture’s effectiveness is limited by the temperature, Mr. Moore adds.
Chemicals are not applied to the unpaved roads in Rappahannock and Fauquier, no matter what the thermometer reads. “We’ll scatter gravel on top of the snow or ice. Th?n, when it melts. the gravel settles. We get more use out of it that “way^* explains Mr. Moore. ’.
At the close of Day One of the storm of ’87, it begins to look like there will be a day two, three, four and five. The snow is tapering off but forecasters are saying more is on its way. They’re calling for 20-mile per hour winds and sub-zero lows to
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